Elaborated Solutions
Astrocyte - Answer Most numerous cells of the CNS
Notochord - Answer Includes ectoderm to form neuroectoderm
remnant IVD as "Nucleus Pulposus"
Foramen Ovale - Answer becomes fossa ovalis
Ductus Arteriosus - Answer becomes ligamentum arteriosum
Umbilical Vein - Answer becomes ligamentum teres
Umbilical Artery - Answer becomes medial umbilical ligaments
Urachus - Answer becomes duct of allanois
Oligodendrocytes - Answer form myelin around the CNS
Telencephalon
(from Prosencephalon) - Answer Forebrain (higher function)
CN I (Olfactory)
Lateral Ventricles separated by Septum Pellucidum.
Diencephalon
(from Prosencephalon) - Answer Thalamus
hypothalamus
pineal
,retina
posterior pituitary
CN II (Optic)
Foramen Monroe = 1st/2nd to 3rd Ventricle
Mesencephalon
(from Mesencephalon) - Answer Midbrain
CN III (Oculomotor)
CN IV (Trochlear)
Cerebral Aqueduct of Sylvius
Metencephalon
(from Rhomboencephalon) - Answer Pons & Cerebellum
CN V (Trigeminal)
CN VI (Abducens)
CN VII (Facial)
CN VIII (Vestibular)
4th Ventricle
Myelencephalon
(from Rhomboencephalon) - Answer Medulla Oblongata
CN IX (Glossopharyngeal)
CN X ( Vagus)
CN XI (Spinal Accessory)
CN XII (Hypoglossus)
4th ventricle
Circle of Willis - Answer Arterial anastomosis
1. bloody supply between forebrain & hindbrain
,2. anatomically between pituitary gland & optic chiasm
3. internal carotid & vertebral arteries supply circle
4. ant/post cerebral & ant/post communicating make circle.
Middle Cerebral Artery - Answer MC location for cerebral vascular accident
Subarachnoid space - Answer location for lumbar spinal tap, between arachnoid and pia mater.
L1/L2, at conus medullaris, followed by cauda equina - the roots for lumbar, sacral and coccygeal nerves
through the lumbar cistern. - Answer Where does spinal cord terminate?
Bell Magendi Law - Answer Dorsal Roots - sensory, afferent
Ventral Roots - motor, efferent
Chorea (quick movements) - Answer Damage to Basal Ganglia will cause?
Parkinson's Disease - Answer due to neuronal degradation of the substantia nigra "Lewey Bodies".
Associated with resting tremor and shuffling gate.
Cerebral Aqueduct of Sylvius - Answer CSF exchange between 3rd and 4th Ventricles
PURKINJE (main one to know), Golgi II, Stellate, Basket, and Granular - Answer Grey Matter neuron cell
types in the cerebellum
Cerebral Nuclei - Answer (from medial to lateral)
1. Fastigial
2. Globus
3. Emboliform
4. Dentate
, Deiters Nucleus - Answer lateral vestibular
Meynert's Nucleus - Answer forebrain, has ACH
Raphe Nucleus - Answer medulla oblongata, serotonin
Lenticular Nucleus - Answer part of corpus striatum
Precentral Gyrus - Answer primary motor nucleus (motor is in the front of the car)
Postcentral Gyrus - Answer primary sensory nucleus
UMNL - Answer increased deep tendon reflexes and muscle tone, positive pathological reflexes,
spasticity, hypertrophy, clonus, decreased BILATERAL superficial reflexes
LMNL - Answer decreased deep tendon reflexes and muscle tone, negative pathological reflexes,
flaccidity, atrophy, fasciculations, decreased UNILATERAL superficial reflexes.
Schwann Cell - Answer produces myelin in the PNS
Phrenic Nerve - Answer C3, C4, C5 keep the diaphragm alive
Lateral Femoral Cutaneous Nerve - Answer L2, L3 sensory to the lateral thigh, branches to the
peritoneum. Meralgia Paresthesia is compression of this nerve. "Shes 23 (L2, L3) and too Cute
(cutaneous) for me"
Common Peroneal Nerve - Answer L4-S2, foot drop! sensory to anterior leg and foot, motor to all
muscles of the back of the thigh, leg and foot.
Brachial Plexus - Answer Know all but focus on Cords and Branches